Person in charge: Christian Ethé
The NEMO configuration described here is an ocean-sea ice configuration based on the version 3.6 stable of NEMO (Nucleus for European Models of the Ocean), which includes three major components: the ocean physics NEMO-OPA, the sea-ice dynamics and thermodynamics NEMO-LIM3 and the ocean biogeochemistry NEMO-PISCES. The available resolutions builded on the ORCA quasi-isotropic global tripolar grid are 2°, 1° and 1/4°. The 1° (eORCA1) and 1/4° (eORCA025) are extended to the south so as to better represent the contribution of Antarctic under-ice shelf seas to the Southern ocean freshwater cycle. Notice that the biogeochemical model PISCES can be run coupled online with the dynamics ( ORCA1-LIM3-PISCES for example ) or in a "stand-alone" ( ORCA2-LIM3-PISCES). This NEMO configuration has been builded to be able to perfom the OMIP6 experiments ( omip1 and omip2 protocol) ; thus some specific sources code are available through the shaconemo repository.
To find out more about the model description and the reference configurations, go here: http://www.nemo-ocean.eu/About-NEMO. To use and extract NEMO, you first need to register and choose a login/passwd
#-H- NEMO_v6_OMIP NEMOGCM for CMIP6 exercise #-H- NEMO_v6_OMIP libIGCM trunk rev 1471 #-H- NEMO_v6_OMIP XIOS branch xios-2.5 rev 1550 #-M- NEMO_v6_OMIP Christian.Ethe@ipsl.fr #-C- NEMO_v6_OMIP trunk/libIGCM 1476 10 libIGCM . #-C- NEMO_v6_OMIP branches/2015/nemo_v3_6_STABLE/NEMOGCM 9455 7 . modeles #-C- NEMO_v6_OMIP trunk/ORCA1_LIM3_PISCES 275 17 . modeles/NEMOGCM/CONFIG #-C- NEMO_v6_OMIP trunk/eORCA025_LIM3 275 17 . modeles/NEMOGCM/CONFIG #-C- NEMO_v6_OMIP trunk/eORCA025_LIM3_PISCES 275 17 . modeles/NEMOGCM/CONFIG #-C- NEMO_v6_OMIP trunk/ORCA1_OFF_PISCES 275 17 . modeles/NEMOGCM/CONFIG #-C- NEMO_v6_OMIP CONFIG/UNIFORM/v6/NEMO_v6 4716 8 NEMO_v6 config #-C- NEMO_v6_OMIP XIOS/branchs/xios-2.5 1550 12 XIOS modeles
mkdir $WORKDIR/NEMO_STD ; cd $WORKDIR/NEMO_STD svn co http://forge.ipsl.jussieu.fr/igcmg/svn/modipsl/trunk modipsl cd modipsl/util ./model NEMO_v6_OMIP
Several built-in configurations are provided to evaluate the skills and performances of the model ( cd ../config/NEMO_v6 ). They can be used as first easy set-up and as template for setting up a new configuration :
gmake ORCA2LIM3PISCES
gmake ORCA2OFFPISCES
gmake ORCA1LIM3PISCES
gmake ORCA1LIM3PISCES
gmake ORCA1OFFPISCES
gmake ORCA025LIM3
gmake ORCA025LIM3PISCES
For example : To perform an interannual COREII atmospheric forcing using the built eORCA1_LIM3_PISCES
cd modipsl/config/NEMO_v6 cp EXPERIMENTS/ORCA1_LIM3_PISCES/ia/config.card . ../../libIGCM/ins_job
The card files ( opa9.card for orca1_lim and pisces.card for pisces) contain the list of files needed to perform the simulation.
These files are described here: https://forge.ipsl.jussieu.fr/igcmg_doc/wiki/Doc/Models/NEMO
This example is a 62 years CORE2 forcing interannual run of ORCA1_LIM3_PISCES split in 1-year jobs.
JobName=eOR1L3P-IA-CORE #----- Short Name of Experiment ExperimentName=ORCA1ia #----- DEVT TEST PROD SpaceName=DEVT LongName="ORCA1_LIM3_PISCES NEMO configuration" TagName=ORCA1_LIM3_PISCES #D- Choice of experiment in EXPERIEMENTS directory ExpType=ORCA1_LIM3_PISCES/ia #============================ #-- leap, noleap, 360d CalendarType=noleap #-- Begin and end of Job #-- "YYYY-MM-DD" DateBegin=1948-01-01 DateEnd=2009-12-31 #============================ #-- 1Y, 1M, 5D, 1D PeriodLength=1Y
on jean-zay : sbatch Job_eOR1L3P-IA-CORE on irene : ccc_msub Job_eOR1L3P-IA-CORE
The performances of the NEMO configuration can be find here: http://forge.ipsl.jussieu.fr/igcmg/wiki/PerformancesIPSLCM6